ACE Part FSM Folding Stock Mechanism A500-K

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ACE Part - (FSM) ACE Folding Stock Mechanism A500-K

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Doublestar-ACE's Standard Folding Stock Mechanism (FSM) with Boss fits between the rifle's Receiver Block and the Modular Stock (not included). The FSM can be mounted to fold to either the left or right. It will add .75" to your Length of Pull and weighs 3.5 oz. The Boss is the raised (oblong shaped) portion on the Arm (small side).


More Information
ManufacturerDoublestar Corp.
Recoil PadNo
Metal FinishBlack
Manufacturer Part NumberA500-K
CA Prop 65Yes